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Rolling fire doors

Rolling Fire Doors That Work Every Time They Are Needed

Janus 500 Series Rolling Fire Doors, 500i Insulated Rolling Fire Doors and 550 Series Fire Rated Counter Shutters are UL-rated and close automatically through fusible links, smoke and heat detectors or a connection to the building alarm.

Talk to your Janus commercial sales rep: (866) 562-2580

Up to 4 HoursUL fire rating (500 Series, 18-gauge)
R-4.7mineral wool insulation in the 500i
600 sq ftmaximum fire door opening
165°Ffusible link activation
Auto-Resetdrop test on 500 and 500i doors

Models

Fire Protection for Large Openings and Service Counters

Choose the 500 for large openings, the 500i when the opening also needs insulation, and the 550 for counters and other compact fire-rated walls.

White Janus 500 Series rolling fire doorUL rated

500 Series Rolling Fire Door

Up to 30' wide or 24' high · 600 sq ft max

For openings that need a fire-rated door, with a space-saving design that installs to steel, concrete or masonry.

  • UL ratings of 45 minutes, 1-1/2 hours and 3 hours; 4 hours in 18-gauge
  • Chain hoist with fusible link and auto-reset drop test
  • Torsion springs rated 25,000 cycles (50,000 or 100,000 optional)
Explore the 500 Series
Tan Janus 500i insulated rolling fire doorInsulated · UL rated

500i Insulated Rolling Fire Door

Up to 30' wide or 24' high

Fire protection plus insulation: 22, 20 or 18-gauge slats with a 24-gauge backer and mineral wool insulation.

  • UL ratings of 45 minutes, 1-1/2 hours and 3 hours
  • Mineral wool insulation rated R-4.7
  • UL 1784 perimeter smoke seal option
Explore the 500i Series
Janus 550 Series fire rated counter shutterUL rated

550 Series Fire Rated Counter Shutter

Up to 12' wide × 8' high

UL-rated fire protection in a compact, cost-effective shutter for pharmacies, cafeterias, concessions, ticket counters and hospital desks.

  • 45 and 90-minute UL ratings for sheetrock, steel or masonry walls
  • Push-up, hand crank or motor operation
  • Galvanized steel or stainless steel
Explore the 550 Series

Standard features & options

How Janus Fire Doors Activate and Reset

Standard

  • Fail-safe release devices that respond to fire alarm signals or heat
  • 165°F fusible links, smoke detectors or heat detectors
  • Controlled descent that seals the opening and preserves the wall's fire rating
  • Grifco hoist for normal operation and emergency descent
  • UL-listed fire door electric operators with battery back-up
  • Auto-reset drop test on 500 and 500i doors

Options

  • Auto-closing devices (XP, XPBB, AFCB)
  • Horn/strobe, standalone or alarm-connected
  • Vision panels (45-minute, 1-1/2 and 3-hour ratings)
  • Flame baffle, jamb seal and smoke seal
  • Between-jamb, under-lintel or above-lintel mounting
  • High-cycle springs (50,000 or 100,000 cycles)

Specifications from the 2026 Janus door sheets; confirm sizes and options with your Janus rep.

Hand holding a lit match in front of a red rolling fire door

Inspection and compliance

Fire Doors Only Work If They Work Every Time

A rolling fire door can sit open for years before it is needed. Annual inspection and drop testing are what keep it ready.

  • At minimum, annual inspection and drop testing by a trained, certified fire door assembly technician
  • Keep the opening clear: never block, prop open or store materials under a fire door
  • Repairs with manufacturer parts, and a drop test after every repair or approved modification
  • Janus offers fire door training for dealers and customers, including hands-on drop-test training

Follow NFPA 80 and your Authority Having Jurisdiction for inspection and testing requirements.

Applications

Where These Doors Work Best

From the Janus Rolling Steel Application Guide.

500 & 500i Series

  • Education
  • Government
  • Healthcare
  • Heavy equipment
  • Manufacturing
  • Stadiums

550 Series

  • Education
  • Government
  • Healthcare
  • Heavy equipment
  • Manufacturing
  • Restaurant
  • Stadiums
Janus Door Selector Tool: pick the building type, answer spec questions and see every Janus door that fits

Door Selector Tool

Find the Right Rolling Steel Door in Minutes

Answer eight quick questions about the building, the opening and how the door will be used. The Door Selector shows every Janus rolling steel, commercial sheet and mini door that fits, with specifications, door sheets and a quote link on every result.

  1. Pick the building type and application
  2. Set wind load, fire rating and daily cycles
  3. See every matching door with specs and quote links

Videos

See Janus Rolling Steel in Action

Janus Rolling Steel Application Video
Janus Rolling Steel Door Explainer Video

Door sheets, specifications, drawings and installation documents are on each series page.

Common questions

Questions About Rolling Fire Doors

How do Janus rolling fire doors close in a fire?

A fail-safe release device closes the door when a 165°F fusible link melts, a smoke or heat detector trips, or the building fire alarm sends a signal. The door descends at a controlled speed and seals the opening.

What fire ratings are available?

The 500 Series is UL rated for 45 minutes, 1-1/2 hours and 3 hours, and 4 hours in 18-gauge. The 500i is rated up to 3 hours, and the 550 counter shutter for 45 and 90 minutes.

How often should rolling fire doors be tested?

At minimum, a trained and certified fire door assembly technician should inspect and drop test each door every year, and after every repair or approved modification. Follow NFPA 80 and your Authority Having Jurisdiction.

What is the difference between the 500 and the 500i?

The 500i adds a 24-gauge backer and mineral wool insulation rated R-4.7, for openings that need both fire protection and thermal performance.

Ready to Spec Rolling Steel for Your Next Project?

Tell us about the opening and a Janus commercial team member will help you find the right door, fast.